Questions Asked on
September 29, 2013

  1. Geometry

    A regular pentagonal solid prism has 9cm base edges. A larger, similar solid prism of the same material has 36cm base edges. How does each indicated measurement for the larger prism compare to the same measurement for the smaller prism? Find the volume and

    asked by George
  2. SS

    The political movement that brought Africans together in the 1950s was known as ________. a. imperialism b. salt trade c. colonialism d. Pan-Africanism Enslaved Africans from West Africa traveled across the Atlantic Ocean to European Colonies in the

    asked by A
  3. chem

    write the correct net ionic equation and identify spectator ions when CoSO4 and BaCL2 mix

    asked by Alexandra
  4. chem

    The reaction: 2C2H2+5O2->5O2->4CO2+2H2O is performed by mixing 175 grams of C2H2 and 175 grams of O2 to produce 127 grams of CO2 1)Limiting reagent 2)Theretical yeield of CO2 3)Percent yield of CO2

    asked by Alexandra
  5. Probability and Statistics (Continuation)

    Assume 10% of the engines manufactured on an assembly line are defective. If engines are randomly selected one at a time and tested. What is the probability that the third nondefective engine will be found a)on the fifth trial? b) on or before the fifth

    asked by Katy
  6. AP Chemistry

    Consider the reaction 2 Al2O3(s) ! 4 Al(s) + 3 O2(g) . H = +3339.6 kJ/mol What is the change in heat when 0.455 L of a 3.60 M Al solution reacts with excess O2 ? 1. -424 kJ 2. -2735 kJ 3. -1695 kJ 4. -1368 kJ 5. -26,521 kJ 6. -21,962 kJ 7. -685 kJ 8.

    asked by Anonymous
  7. math

    A store has 2 times as many hooded sweatshirt as crewneck sweatshirt. The total number of sweatshirts is 36. How many hooded sweatshirts does the store have?

    asked by Ms.Vargas
  8. Geometry

    The volume of two similar rectangular prisms are 64cm^3 and 1000cm^3. The surface area of the smaller figure is 112cm^2. What is the surface area in square centimeters of the larger figure?

    asked by George
  9. AP Chemistry

    Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2CO(g) + O2(g) --> 2CO2(g) change in H for this reaction is −135.28 kcal. If 811.7 kcal is released, how many moles of CO must have reacted? 1. 16.3 mol 2. 40.5 mol 3.

    asked by Anonymous
  10. chem

    How many moles of carbon are needed to react with 525 g of hematite 2FeO3+6C->4Fe+3Co2 idk how to convert moles of fe2o3 to carbon

    asked by Julie
  11. Probability and Statistics

    An oil prospector will drill a succession of holes in a given area to find a productive well. The probability that he is successful on a given trial is 0.2. a) What's the probability that that the third hole drilled is the first to yield a productive well?

    asked by Katy
  12. Chemistry Please help

    A bottle of 12.0 M hydrochloric acid has only 35.7 mL left in it. What will the HCl concentration be if the solution is diluted to 250.0 mL?

    asked by Alexandra
  13. physics

    A large boulder is ejected vertically upward from a volcano with an initial speed of 39.0m/s . Air resistance may be ignored. (a) At what time after being ejected is the boulder moving at a speed 19.0m/s upward? (b) At what time is it moving at a speed

    asked by Emma
  14. chemistry

    Concentrated sulfuric acid (18.3 M) has a density of 1.84 g/mL. How many moles of H2SO4 are in each milliliter of solution?

    asked by Anonymous
  15. Statistics

    1. A human gene carries a certain disease from a mother to her child with a probability rate of 0.58. That is, there is a 58% chance that the child becomes infected with the disease. Suppose a female carrier of the gene has five children. Assume that the

    asked by Lisa
  16. Chemistry

    Some bacteria get their energy from reduction of CO2 to CH4 by H2. 1. How many electrons are required to reduce CO2 to CH4? 2. Calculate the G for formation of methane based on the two standard reduction potential of -0.171V for reduction of CO2 to CH4 and

    asked by Kam
  17. Math

    Ms. Santiago has many pens in her desk drawer. She says that if you divide the total number of pens by 1, 2, 3, 4, 5, or 6, you get a remainder of 1. What is the least number of pens that could be in ms. Santiago's drawer,

    asked by Shohanur
  18. Chemistry

    Some bacteria get their energy from reduction of CO2 to CH4 by H2. 1. How many electrons are required to reduce CO2 to CH4? 2. Calculate the G for formation of methane based on the two standard reduction potential of -0.171V for reduction of CO2 to CH4 and

    asked by Kim
  19. physics

    A car sits in an entrance ramp to a freeway, waiting for a break in the traffic. The driver sees a small gap between a van and an 18-wheel truck and accelerates with constant acceleration along the ramp and onto the freeway. The car starts from rest, moves

    asked by Emma
  20. 8th grade Science

    In the early 1900s, Alfred Wegener noticed that some of the Earth's continents looked like they might fit together like a jigsaw puzzle. He also observed that the continents that looked like they fit together had similar plants, animals, and rock

    asked by M
  21. Math Probabilities

    A standard deck of cards contains 52 cards. Of these cards there are 13 of each type of suit (hearts, spades, clubs, diamonds) and 4 of each type of rank (A – K). Two cards are pulled in order from this deck of 52 playing cards. What is the probability

    asked by Alex
  22. delftx

    We are going to build a PV system on a roof of 10m2, and we have two possible PV modules: (1) A first generation module with efficiency η=17% and cost of 0.80€/Wp. (2) A second generation PV module with efficiency η=10% and cost of 0.40€/Wp. The

    asked by Anonymous
  23. Chemistry

    How long would it take for 2.2 x 10^-4 mol H2 to effuse through the same orifice as the 2.2x 10^-4 mol N2? (It takes 105s for N2 to effuse) I was thinking of setting up the equation like: sqroot(28.014gN2/mol / 2.016g H2/mol) = 3.728 What should I do next?

    asked by Nikki
  24. Earth Science

    A contour (topographic) map indicates that a stream is flowing across a landscape. If the stream has a constant volume, where on the map would the stream most likely have the highest velocity? a. As the stream moves across several closely spaced contour

    asked by Paula
  25. Science/Math

    Word Problem page 19 John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200 m, which he covers at 4.5 m/s. At what average speed must Al run to beat John? The textbook

    asked by Walter
  26. statistics,math

    Post a behavioral research situation that could use a Pearson coefficient research study and a chi square research study. Present the rationale for each selection. Be very specific in your presentation

    asked by high school
  27. Algebra 1

    You had $22 to spend on four raffle tickets. After buying them you had $6. How much did each raffle ticket cost?

    asked by Brendan
  28. physics

    a body is under of 2 forces 7n and 10n find the resultant of 2 forces if (a)the forces are parallel and act in thesame direction (b)the forces are parallel and act in opposite direction(c)the two forces are inclined and act at an angle of 60 degree to each

    asked by johnson
  29. physic

    As you look out of your dorm window, a flower pot suddenly falls past. The pot is visible for a time t, and the vertical length of your window is Lw. Take down to be the positive direction, so that downward velocities are positive and the acceleration due

    asked by koler
  30. Grade 12 physics

    At the beach, 3 children pull on a floating toy. Child 1 plus with a force of 15N [N 24°E], child 2 pulls south and child 3 pulls west. The net force of the toy is zero. Assume that there are no other significant forces acting on the toy. a) Calculate the

    asked by keisha
  31. Science/Math

    Word Problems pages 18-19 A sailboat heads north at 3 m/s for 1 hour and then tracks back to the southeast (at 45 degrees to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location? The textbook that

    asked by Walter
  32. geometry

    if line MS is a median of triangle MNQ. Line QS equals 3a-14, line SN equals 2a + 1, and the measurment of angle MSQ equals 7a+1, find the value of a. Is line MS also an altitude of triangle MNQ?

    asked by steve
  33. Social Studies

    Which of the following describes the economies of Ghana and the Democratic Republic of the Congo (DRC)? a. Ghana has a stable, fast-growing economy while DRC has an unstable economy due to internal conflict. b. The economies of both Ghana and DRC are

    asked by Anonymous
  34. Physics

    Problem 4- Speedy car, driving at 30 m/s. The driver suddenly observes a slow-moving van 155 m ahead traveling at 5 m/s in the same direction. The driver of the car immediately applies the brakes causing a constant acceleration of 2 m/s2 in a direction

    asked by Maryam
  35. Physics

    Vector has a magnitude of 8.10 units and makes an angle of 52.0° with the positive x-axis. Vector also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods find the following. a) The vector sum Magnitude of A +

    asked by Griet
  36. algebra

    Kelly plans to put her graduation money into an account and leave it there for 4 years while she goes to college. She receives $750 in graduation money that she puts it into an account that earns 4.25% interest compounded semi-annually. How much will be in

    asked by joe
  37. life science , geography , history and math literecy

    I am a grade 11 student and want to follow careers linked to geograpy . My problem is that most of the careers I am in interested in want pure math and im doing math literecy . My question is that , Is it possible for me to start mathematics in University

    asked by felicia
  38. Chemitry

    if your smoke detector contains 0.10 mg of 241Am, how long will it take to decay 1.25 * 10^-2mg

    asked by Mel
  39. physics

    Given the forces Fa= 2.3 N [S 35° W], Fb= 3.6N [N 14° W] and Fc= 4.2N [S 24°E] calculate the following: Fa + Fb + Fc

    asked by keisha
  40. physics

    A pilot flying low and slow drops a weight; it takes 3.2s to hit the ground, during which it travels a horizontal distance of 155m . Now the pilot does a run at the same height but twice the speed. How much time does it take the weight to hit the ground?

    asked by jay
  41. Physical Conceptual Science

    Trucks often have signs on the back that say, “If you can’t see my mirrors, I can’t see you.” Explain the physics.

    asked by Miss Angie
  42. world history

    what was the most significant reform that Peter the Great implemented in Russia?

    asked by Anonymous
  43. English

    really need help on this question it is worth 5 marks. The question is: Explain how "A Thankless Experience" is a satire with support with direct reference to the essay. The short essay is called A Thankless Experience by Stephen Lautens' it is on the

    asked by Andy
  44. Genetics 160

    Using D for tall plants and d for dwarf plants, a 1:1 ratio is obtained in which of the following crosses? These are my choices: Dd X dd DD X dd DD X Dd DD X DD Dd X Dd

    asked by Julie
  45. Math

    A standard deck of cards contains 52 cards. Of these cards there are 13 of each type of suit (hearts, spades, clubs, diamonds) and 4 of each type of rank (A – K). Three cards are pulled in order from this deck of 52 playing cards. What is the probability

    asked by Alex
  46. Math

    A pilot of a single engine airplane flies at a constant speed of 200 km/h at a bearing of 25 degree north east there is 40 km/h crosswind blowing south east 45 degree what are plane's actual speed and direction ?

    asked by Vian
  47. Chemistry

    How many atoms of hydrogen are in a mixture of 3.49x10^23 molecules of H2O and 78.1g of CH3OH?

    asked by Madison
  48. science

    which component of the technological system is achieved when your camera takes a photograph ? a) input b) feedback c) goal d) constraint

    asked by victoria
  49. physics

    a body is under of 2 forces 7n and 10n find the resultant of 2 forces if (a)the forces are parallel and act in thesame direction (b)the forces are parallel and act in opposite direction(c)the two forces are inclined and act at an angle of 60 degree to each

    asked by johnson
  50. Basic Biomechanics

    Wendell invests $10,000 in a stock portfolio made up of Petroleum Special at $30 per share, New shoes at $12 per share, and Capital beans and Sprouts at $2.50 per share. He places 60 percent of the money in P.S., 30 percent in N, and 10 percent in B & S.

    asked by Walter
  51. science

    you calculate the area of a 150 m x 100.0 m room. How many significance figures should your answer include ? a) 1 b) 2 c) 3 d) 4

    asked by victoria
  52. Geometry

    Two similar pyramids have laterl area 8ft^2 and 18ft^2. The volume of the smaller pyramid is 32ft^3. Find the volume of the larger pyramid.

    asked by George
  53. Wayne community college

    When a 0.101 kg mass is suspended at rest from a certain spring, the spring stretches 3.80 cm. Find the instantaneous acceleration of the mass when it is raised 5.90 cm, compressing the spring 2.10 cm.

    asked by Joe
  54. english

    animals posses sensory powers that humans lack. Homing pigeons fly with great speed and accuracy when with messages to faraway places

    asked by Anonymous
  55. Geometry

    The slan heights of two similar pyramids are in the ratio 1:5. The volume of the smaller pyramid is 60m^3. What is the volume in cubic meters of the larger pyramid?

    asked by George
  56. Physics

    Problem 2- A car is stopped at a traffic light. It then travels along a straight road so that its position from the light is given by x(t) 2.5t - 0.13t^2 in meters. c. What is the position of the particle when it reverses its motion?

    asked by Maryam
  57. PHYSICS

    Two protons in a molecule are 3.80 multiplied by 10-10 m apart. Find the electrical force exerted by one proton on the other. Magnitude N (b) State how the magnitude of this force compares with the magnitude of the gravitational force exerted by one proton

    asked by physics
  58. Basic Biomechanics

    A sailboat heads north at 3 m/s for 1 hour and then tacks back to the southwest (at 45 degree to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location?

    asked by Walter
  59. science

    you calculate the area of a 150 m x 100.0 m room. How many significance figures should your answer include ? a) 1 b) 2 c) 3 d) 4

    asked by victoria
  60. Chemistry

    K2SO4+ Na2HPO4=? NaHCO3 + Sr(NO3)2=?

    asked by kelly
  61. Chem Simple question

    Magnesium metal burns in oxygen to form magnesium oxide, MgO. (a) Write a balanced equation for the reaction Why is it 2Mg+O2->2MgO and not Mg+O->MgO

    asked by Julie
  62. physic

    You are traveling at a constant speed υM, and there is a car in front of you traveling with a speed υA You notice that υM>υA, so you start slowing down with a constant acceleration a when the distance between you and the other car is x. What

    asked by kolam
  63. Chemistry

    You have three solutions, A, B, and C, each of which are believed to be one of the following: calcium hydroxide, potassium sulfate, and sodium chloride. Combining B and C results in the formation of a precipitate, but neither solution forms a precipitate

    asked by Matt
  64. Probability and Statistics

    Assume 10% of the engines manufactured on an assembly line are defective. If engines are randomly selected one at a time and tested. What is the probability that the third nondefective engine will be found a)on the fifth trial? b) on or before the fifth

    asked by Katy
  65. Math

    There are 45 candies in a bowl, 20 red and 25 yellow. If two are taken from the bowl, what is the probability they will be two red candies? here is what I have but I need help with the rest or even knowing if I am right. 20/45 25/43 25 * 20 = 500 45 * 43 =

    asked by Alex
  66. Chemistry

    CuSO4+LiNo3 Potassium sulfate+lithium nitrate Can someone help me figure out the equations for these two? Phases aren't required

    asked by kelly
  67. PHYSICS

    A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

    asked by physics
  68. chem-redox

    Ca + Cr2O7{-2} = Ca{2+} + Cr{+3} Blance the redox please someone help me I got exam tomorrow and I got to go sleep soon

    asked by Please help
  69. 8th grade science

    How does altitude affect the freezing, melting and boiling points of water?

    asked by A
  70. History

    Which of the following statements about John D. Rockefeller is most accurate? A. He founded the Standard Oil Company when he was 24 years old. B. He considered competition to be the central ideal of capitalism. C. He drilled the first oil well near

    asked by carolyn
  71. math

    light from the sun takes approximately 8 minutes to reach earth. If the light travels at a speed of 3 x 10 raised to 8 meters / second, calculate to 3 significant figures the distance from the sun to the earth

    asked by chetan
  72. help!!!!!!!! Physics

    A microbiologist measures the speed of a swimming bacterium. The bacterium covers a distance of 2.16 microns in 5.0 seconds. The biologist wished to compare the speed of the bacteria with other animals, but the speeds of other animals are listed in

    asked by Mary
  73. social studies

    daydreaming can be an expression of: A) repression B) denial C) sublimation D) projection My answer is D

    asked by Dee
  74. MATH

    customers loan of 675 the annual interest is 19.25. what is the total dollar amount to be repaid including principle and interest for the entire year?

    asked by Anonymous
  75. Chemistry

    Saccharin (C7H5NO3S) is sometimes dispensed in tablet form. Ten tablets with total mass of 0.5860 g were dissolved in water. They were oxidized to convert all the sulfur to sulfate ion, which was precipitated by adding an excess of barium chloride

    asked by chica
  76. chemistry

    What mass of KCl \rm KCl is needed to precipitate the silver ions from 13.0mL mL of 0.200 M M AgNO 3 \rm AgNO_3 solution

    asked by Anonymous
  77. Chemistry

    Calculate the molarity of a solution prepared by dissolving 16 g of urea, NH2CONH2, in 39 g of H2O. The density of the solution is 1.3 g/mL. I've tried this question so many times but I keep getting it wrong please help me

    asked by danielle
  78. chemistry again

    how do you find the concentration of an ion remaining after a reaction is complete???

    asked by Anonymous
  79. ap chem

    If 26.0mL of AgNO 3 is needed to precipitate all the Cl −ions in a 0.750-mg sample of KCl (forming AgCl), what is the molarity of the AgNO 3 solution

    asked by ally
  80. Stats/ Probability

    Repeated die toss experiment. A fair die is tossed repeatedly, and the sequence of numbers that turn up is recorded, until a 1 is obtained. When a 1 is obtained, the experiment is over, but the 1 is included in the sequence. Thus every outcome is a

    asked by denim
  81. chemistry

    How many mL of 0.416 M of HCl are needed to dissolve 8.68 g of BaCO3? 2HCl(aq)+BaCO3(s)=BaCl2(aq)+H2O(l)+CO2(g)

    asked by christa
  82. Physics 2

    A 3.0-g string, 0.14 m long, is under tension. The string produces a 200-Hz tone when it vibrates in the third harmonic. The speed of sound in air is 344 m/s. Find the tension in the string.

    asked by Heather
  83. offfice finaces

    Using your computer software, you create a new file for an existing customer. When you're finished, you should A. coordinate the old and new files by giving both the same name. B. overwrite the existing file by giving the new file the same name. C. allow

    asked by Sofiya
  84. Pre Calculus

    He needs two adjacent rectangular enclosures - he has 300 feet of fencing. a. find a function that models the total area of enclosures with respect to the width of the enclosures. b. write your function in vertex form using the vertex formula. c. what is

    asked by emily
  85. college physics

    An object acted on by three forces moves with constant velocity. One force acting on the object is in the positive x direction and has a magnitude of 6.4N ; a second force has a magnitude of 5.0N and points in the negative y direction.

    asked by taylor
  86. Math

    Solve the system by substitution or elimination. x^2 + 2y^2 = 8 x^2 - y^2 = 1

    asked by S
  87. Math (College Pre-Cal)

    The exact conversion between the English measurement system and the metric system is given by the equation 1 inch= 2.54 cm. Let f(x) be the number of miles in x meters. Find a formula for f(x). Give an exact answer.

    asked by anonymous
  88. stats

    Post a behavioral research situation that could use a Pearson coefficient research study and a chi square research study. Present the rationale for each selection.

    asked by high school
  89. Advance mathematics

    How can i find semi-interquartile range from grouped data?

    asked by Angelus
  90. Chemistry

    Determine if precipitation occurs and write the proper ionic equation a) Na2O3+NiCL2 b) Pb(NO3)2+ALCL3

    asked by Julie
  91. Science/Math

    Math Problem page 18 Wendell invests $10,000 in a stock portfolio made up of Petroleum Special at $30 per share, Newshoe at $12 per share, and Beans and Sprouts at $2.50 per share. He places 60 percent of the money in P.S. (Petroleum Special), 30 percent

    asked by Walter
  92. physics

    an airplane rolls down the runaway. compared to which reference point is the airplane in motion?

    asked by Anonymous
  93. Live Tutors

    Is there a website that has live tutors for free? Not like tutor. com when you have to sign up with a credit card for a trial.

    asked by Kelsi
  94. Chemistry

    Calculate the number of phosphorus atoms in 17.0g sample of calcium phosphate

    asked by Madison
  95. Math

    How would you solve these compound inequalities word problems? 1. The human ear can distinguish sounds between 20Hz and 20,000 Hz, inclusive. 2. For a man to box as a welterweight, he must weigh more than 140 lbs, but at most 147 lbs.

    asked by Pam
  96. Chemistry

    The extracellular concentrations of Na+ and K+ are 135mM and 6mM, respectively. The intracellular concentrations of Na+ and K+ are 10mM and 105mM, respectively. The membrane potential is 75mV. For Na+/K+ ATPase, 3Na+ are exported and 2K+ are imported.

    asked by Drew
  97. science

    convert following measurement 23kL= L

    asked by addi
  98. Need to know how to do it, not just answer

    Post a behavioral research situation that could use a Pearson coefficient research study and a chi square research study. Present the rationale for each selection. Be very specific in your presentation

    asked by Question on practice exam
  99. Genetics

    Albinism is inherited as a simple recessive trait. If a woman and her husband are both heterozygous for albinism then what is the probability that their first five children will have these phenotypes? Child 1 - albino; child 2 - normal; child 3 - normal;

    asked by Hannah
  100. maths

    In a family of two children, find the probability that the family has two boys given that the first child is a boy.

    asked by partha
  101. Chemistry

    Saccharin (C7H5NO3S) is sometimes dispensed in tablet form. Ten tablets with total mass of 0.5800 g were dissolved in water. They were oxidized to convert all the sulfur to sulfate ion, which was precipitated by adding an excess of barium chloride

    asked by Anonymous
  102. Cengage learning

    a year ago Green Technologies Growth Funds was being quoted at an Nav of $21.50

    asked by Anonymous
  103. algebra

    trying to solve a point a slope word problem. you are scheduled to start your job at an oil change shop 2 hours after shop opens. two hours after you start, a total of 11 cars have had their oil changed. three hours later, a total of 14 cars have had their

    asked by aaron
  104. Basic Biomechanics

    John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200 m, which he covers at 4.5 m/s. At what average speed must Al run to beat John?

    asked by Walter
  105. criminal Justice

    Please help me figure out what I am searching for in this question. •Discuss your first theory(Rational Theory) and how criminal justice responses may be formed based on the assumptions of this theory.

    asked by Tom
  106. 7th Grade Math

    Simplify Exponents ba*(2ba4)-3

    asked by Millicent
  107. math

    what is the expression for the factored form of 1/4y^2-36? I got (1/4y-6)(1/4y+6) Is this correct? Thanks for checking my work

    asked by B8
  108. maths

    An initial-value problem is given by the differential equation, f(x,y) = x + y, y(0) = 1.64 The Euler-midpoint method is used to find an approximate value to y(0.1) with a step size of h = 0.1. Then use the integrating factor method, to find the exact

    asked by Matthew
  109. math

    1. Thomas wants to lose weight for the summer. He currently weighs 245 pounds. He wants to lose 5 pounds a month. What is the linear equation that describes is weight loss? If it is September, how much weight will Thomas lose by July (July not included)?

    asked by jarron
  110. mitx

    Consider a flat plate in a supersonic flow at an angle of attack as shown in the figure above, and assume the flow is inviscid. We will learn later in the course that the resulting flow is such that the pressure is uniform on both the upper surface and

    asked by Anonymous
  111. Physics

    A 2.86 kg block starts from rest at the top of a 27.5◦ incline and slides 1.94 m down the incline in 1.43 s. The acceleration of gravity is 9.8 m/s2. What is the speed of the block after it slid the1.94 m? Answer in units of m/s

    asked by Anthony
  112. math

    2. Susan has a bank account in Bank of America. She takes out 600 dollars a month for rent. 3 month later, she has $3,200. What is the linear equation that describes Susan’s situation? How much did Susan start with in her bank account? How many months

    asked by jarron
  113. Physics

    A cyclist maintains a constant velocity of 5.2 m/s headed away from point A. At some initial time, the cyclist is 251 m from point A. What will be his displacement from his starting position after 85 s? Answer in units of m What will be his position from

    asked by Monica
  114. Geometry

    find the radius of a sphere withh the given property. A.The number of square meters of a surface area equals the number of cubic meters of volume. B. The ratio of surface area in square meters to volume in cubic meters is 1:5.

    asked by George
  115. Chemistry

    What is the compound formula for Cation: Na+ and Anion: CN-

    asked by Sabrina
  116. Geometry

    Which is the best approximation of the volume of the ball of string? A. 300ft^3 B. 600ft^3 C. 1,200ft^3 D. 2,400ft^3

    asked by George
  117. physics

    A tennis player kits a ball at ground level giving it initial velocity of 22.0 m/s at 58 degrees above the horizontal. Any help would be appreciated. Thanks.

    asked by deb
  118. Algebra

    Consider two points A=(2,5) and B=(4,3), and a third point P=(a,b) on the x-axis. If the minimum value of line PA^2+ line PB^2 is c, what is a+b+c?

    asked by Ruth
  119. maths

    Ramesh buys 150 shares of par value ` 10/- each of a company which pays annual dividend of 15% at such a price that he receives 10% on his investments. What is the market value of share?

    asked by partha
  120. chemistry

    What volume of 0.140 M HCl is needed to neutralize 2.53g of Mg(OH)_2

    asked by Em
  121. psy 331

    Wilhelm Wundt is known for his research relating to introspection. During the use of this technique, participants receive: (Points : 1) subliminal messages from the researcher and are asked if they remember the messages. a stimulus from the researcher and

    asked by hah
  122. physics

    an electron inside spherical metallic particle of volume 10^ -12 metre cube has a kinetic energy about 10 eV. use uncertainty relations to find relative uncertainty in electron velocity

    asked by prerana
  123. Biology

    Glucose + Fructose=__________________. I am thinking it is sucrose or table sugar but I am not sure.

    asked by David
  124. Chemistry

    A 50mL solution of NaOH is neutralized by adding 37.5 mL of 0.045 M HCL. What was the original concentration of the NaOH solution?

    asked by Julie
  125. Chemistry

    A .500g unknown sample is titrated with 40mL of .187M KMno4 by the following reaction: 5Fe{2+} + MnO4{-1} + 8H{+1} -> 5Fe{3+} + Mn{2+} + 4H2O. What is the percentage of iron in the following sample

    asked by Julie
  126. orchestra

    I will take up a free WordPress site around the WordPress blogs web site (not rellay my own site) but I don't just like the designs they feature. Am i able to start using a acquired design on there? I know of a few Hubpages put websites with different

    asked by vhijXWJ8sMNh
  127. Chemistry

    How many potassium atoms in 7.50g of potassium chromate?

    asked by Madison
  128. physics

    (time given is the total time in the air, up and down) During a baseball game, a batter hits a high pop-up. If the ball remains in the air for 4.84 s, how high does it rise? The acceleration of gravity is 9.8 m/s2 . Answer in units of m

    asked by mary
  129. social studies

    people in countries with tend to be happier A) high incomes B) low incomes C) more civil liberties D) high incomes and more civil liberties My answer is B.

    asked by Dee
  130. ecology

    how do you construct a age pyramid. i have the age class and observed individuals how do i get the present in each age class

    asked by donna
  131. Chem

    A 4.96L sample of chlorine gas is contained in a poison control vessel at STP. Calculate the number of grams in this sample

    asked by Joe
  132. Chemistry

    Diarsenic trioxide is the number one source of arsenic; determine the mass of a sample of this extremely poisonous material containing 4.03x10^18 molecules.

    asked by Tired
  133. Math

    How do you Draw and label 2 different rectangles each with a perimeter of 124 units

    asked by Nucole
  134. Trig

    2x^2+2x>4

    asked by Kiki
  135. Science

    Can someone please send me a picture explination of Newton's third law and about a paragraph explaining how it works and stuff thank you .

    asked by Bs
  136. law

    can someone please help me to understand what I am looking for to answer this question and where to find the information. examine how criminal justice responses to crime may be shaped by these theories (Differential-Association and the Rational Choice).

    asked by Patiance
  137. Geometry

    A lawn chair weighs 8Ib. A child's lawn chair has dimensions exactly one half those of the larger chair. How many pounds does the child's chair weigh?

    asked by George
  138. maths

    How much does it cost to paint a triangular surface of sides 6 m, 5 m and 11 m at the rate of ` 20/- per 2 m ?

    asked by partha
  139. uncertainty principle

    an electron inside spherical metallic particle of volume 10^ -12 metre cube has a kinetic energy about 10 eV. use uncertainty relations to find relative uncertainty in electron velocity .

    asked by ......
  140. chemistry

    44.0 mL \rm mL of 0.150 M M Na 2 SO 4 \rm Na_2SO_4 and 25.0 mL \rm mL of 0.160 M M KCl M Na + M_{\rm Na^+}, M SO 4 2− M_{\rm {SO_4}^{2-}}, M K + M_{\rm K^+}, M Cl − =????

    asked by Anonymous
  141. more chemistry

    What volume of 0.115 M M HClO 4 \rm HClO_4 solution is needed to neutralize 58.00mL mL of 8.75×10−2 M M NaOH \rm NaOH

    asked by Anonymous
  142. Combinatorics

    Calvin has 3 red juggling pins, 4 blue juggling pins, 5 white juggling pins, and 6 green juggling pins. How many ways can he give a set of 3 juggling pins to Dan?

    asked by John
  143. Calculus

    A function of three variables is given by, f (x,y,t) = x3y2sin t + 4x2t + 5yt2 + 4xycos t Find ft (3.44,0.58,8.1) giving your answer to 3 decimal places. anybody please help me... thanks a million... got stuck with this qns..

    asked by Fox
  144. Math

    Prove that (xt+yr)/yt is already in lowest terms, b and d have no common prime factor. Note that x/y and r/t are fractions in reduced terms.

    asked by John
  145. Math

    Finding the critical value(s) of x^2, and use a x^2 distribution table to find the limits containing the P-value. Determine whether there is sufficient evidence to support the given alternative hypothesis. Test Ho:theta=2.63,Versus H1:theta does not

    asked by Cheryl
  146. physics

    consider a stationary nucleus of mass M. show that the minimum energy the photon must have to create an electron-positron pair in the presence of stationary nucleus is 2mc^2(1+ m/M) where m is the rest mass of the electron.

    asked by prerana
  147. ap chem

    What volume of 0.140 M HCl is needed to neutralize 2.53g of Mg(OH)

    asked by ally
  148. social studies

    all personality variables are: A) highly heritable B) unconscious C) theoretical constructs D) easily assessed with questionnaries My asnwer is D

    asked by Dee
  149. math

    y = ½ x^2 – x +3 for 0≤x≤6 (b) Calculate the mid- ordinates for 5 strips between x = 1 and x= 6, and hence use the mid-ordinate rule to approximate the area under the curve between x = 1, x = 6 and the x = axis. (c) assuming that the area determined

    asked by kg
  150. Math

    Draw all the possible rectangles with a perimeter of 26 cm and whole number lengths of sides. For each rectangle, label the lengths of two adjacent sides

    asked by Molly
  151. Physics

    A student throws a baseball at a large gong 45 m away and hears the sound of the gong 1.35258 s later. The speed of sound in air is 330 m/s.What was the average speed of the base- ball on its way to the gong? (For simplicity, assume its trajectory to be a

    asked by Tristan
  152. math

    1,1/3,1/5,1/7, meaning the next number is 1/9 right?

    asked by sam
  153. Math

    How would you use a number line to round 148 to the nearest ten.Explain.

    asked by Jerry
  154. French

    I need to replace the verbs with on. i need help please. ex: Les gens admirent es belles couleurs du Paradisier. ex: On admire les belles couleurs du paradisier. 1)C'est vrai que les gens ont tres peur des araignees, surtout de la veuve noire. 2)D'ou vient

    asked by Person
  155. chem

    how many mL of .135M Sr(OH)2 are needed to neutralize 35ml of .157M HCL I know the answer came out to 20.4 ml My only question is how do I convert HCL to Sr(OH)2

    asked by Alexandra
  156. Chem

    Calculate the massif 3.76x10^20 molecules of tricarbon disulphide. Determine the volume,at STP, of 10.24mol helium gas.

    asked by Joe
  157. math subtracting mixed numbers

    9 and 3/4 minus 4 and 1/3 =

    asked by Tsiyon
  158. math

    what is the expression for factorization of 6x^2+24? I got 6(x+2)(x-2) Hopefully I got this correct. Thanks for checking for me, I appreciate it.

    asked by B8
  159. Math

    Ms. Santiago has many pens in her desk drawer. She says that if you divide the total number of pens by 1, 2, 3, 4, 5, or 6, you get a remainder of 1. What is the least number of pens that could be in ms. Santiago's drawer,

    asked by Shohanur
  160. math

    how do you solve this problem (m-5)^4+36=13(m-5)^2 algebraically

    asked by maritza
  161. English/ Writing

    What are some bad compound concepts and what makes them bad?

    asked by Nick
  162. Chemistry

    The extracellular concentrations of Na+ and K+ are 135mM and 6mM, respectively. The intracellular concentrations of Na+ and K+ are 10mM and 105mM, respectively. The membrane potential is 75mV. For Na+/K+ ATPase, 3Na+ are exported and 2K+ are imported.

    asked by Kam
  163. US history

    What were conditions like for the workers befor the beginging of the labor movment?

    asked by Mandy Collins
  164. Math

    How would you find the domain and range of x=2^y?

    asked by O.
  165. math- one last question

    factor completely 4n-n^3 n(y-n^2) n(2+n)(2-n) was this done correctly? Thanks

    asked by B8
  166. Math

    How would you solve these compound inequalities? 1. -1

    asked by Kimmy
  167. English Question

    What is the difference between though and although?

    asked by Anonymous
  168. Math

    How would you solve these compound inequalities? 1. -5k-9 2. 1/2z+3=1/5 3. -2

    asked by Sam
  169. Science

    I need help with finding a picture that goes with Newton's first, second,and third law of motion

    asked by Anonymous
  170. math

    amount of matter in an object

    asked by neil
  171. Science

    picture of Newton's second law of motion and explanation or description also an explanation of inertia

    asked by Yb
  172. math

    3. For the following, state the domain, range, and state whether the relation is a function. If it is not a function explain why. {(3,2), (4,5), (8,5), (-3,2)} {(4,5), (2,3), (-2,4), (9,3)} {3,2), (5,10), (20, 4), (3, 8)} .

    asked by jarron
  173. ALGEBRA 2 help please would appreciate

    3x-8 over 3x subtract 8 over 7y please show all work help needed. I have no idea how to do it

    asked by lisa
  174. math

    why is every integer a rational number?

    asked by jess
  175. chemistry

    Calculate the magnitude of the cohesive energy of potassium iodide (KI). The ionic radii of K+ and I−, are 152 pm and 206 pm, respectively. Assume the Born exponent n is 10. Assume a Madelung constant of 1.7. Please report your answer in kJ/mol or how to

    asked by simone
  176. Geometry

    The density of steel is about 0.28Ib/in^3. could you lift a solid steel ball with radius 4in? whith radius 6in? explain

    asked by George
  177. englsih

    what is writing conventions and how do i improve min

    asked by w
  178. PHYSICS

    HOW TO SOLVE A CIRCUIT CONTAINING A CAPACITOR ACROSS A RESISTOR?

    asked by J.NANDHINI
  179. Algebra

    Two persons, A and B, together have $6 less than a third person, C. If B gives $5 to A, then A will have half as much money as c does. If A gives $5 to B, then A will have one third of what c has. How many dollars has each?

    asked by Jane
  180. Geometry

    what is the radius of the ball of string to the nearest tenth of a foot? A. 3.3 B. 6.6 C. 13.2 D. 20.75

    asked by George
  181. maths

    At what rate of interest per annum, the amount ` 10, 000/- will be doubled in 5 years, interest being compounded quarterly?

    asked by partha
  182. maths

    Find the mean, variance and standard deviation for the following data 6, 12, 6, 8, 10, 8, 12, 8, 14, 16

    asked by partha
  183. science

    What is then volume in mL of then solution 3.04g of sodium chloride from a 0.110 M solution?

    asked by samantha
  184. Geometry

    Find the missing length. MG=10cm, NP=4cm, QP= 14cm, MN=____cm

    asked by George
  185. maths

    Two cones with same base radius 4 cm and height 8 cm are joined together along their bases. Find the surface area of the shape so formed.

    asked by partha
  186. physics

    Q1) consider a stationary nucleus of mass M. show that the minimum energy the photon must have to create an electron-positron pair in the presence of stationary nucleus is 2mc^2(1+ m/M) where m is the rest mass of the electron.

    asked by ......
  187. physics

    (time given is the total time in the air, up and down) During a baseball game, a batter hits a high pop-up. If the ball remains in the air for 4.84 s, how high does it rise? The acceleration of gravity is 9.8 m/s2 . Answer in units of m

    asked by mary
  188. Probability Math

    Event A has probability of 0.2 and event B has probability of 0.3. If they are independent, what is the probability that both of them happen? I can't remember how to do this one.

    asked by Alex
  189. math

    cellular phone companies. 1. with this plan each person is charged $19.95 per month and $0.31 per minute 2. with this plan each person is charged $40.95 per month and $0.16 per min 3. with this plan each person is charged $80.95 per month with unlimited

    asked by louise
  190. physics

    (time given is the total time in the air, up and down) During a baseball game, a batter hits a high pop-up. If the ball remains in the air for 4.84 s, how high does it rise? The acceleration of gravity is 9.8 m/s2 . Answer in units of m

    asked by mary
  191. Maths

    An initial-value problem is given by the differential equation, f(x,y) = –20xy2, y(1) = 1. Use the classical fourth-order Runge-Kutta method with a step-size of h = 0.02, to obtain the approximate value of y(1.02). Give your answer to 6 decimal places.

    asked by Nancy
  192. Physics

    what is the relationship between forces in equilibrium and their components?

    asked by Riana
  193. Physics

    Problem 3- If a bug can jump straight up to a height of 0.5 m. a) what is its initial speed as it leaves the ground? b) How long is it in the air?

    asked by Maryam
  194. math help

    (2np.3r/4r)-(2np-3n)=? a. -1/2np+3n b. -1/2np-3n c. -np/2r+3n d. 1/2np+3n e. 1/2np-3n Please answer and explan

    asked by Tomas
  195. Math

    state and prove the distributive property of rational numbers.

    asked by John
  196. philosophy logic - math

    Natural Deduction Proof 1. 1 ~Y ⇒ ~L 2 W v ~Y 3 W ⇒ ~B / ~B v ~L 2. 1 ~U • (G = ~T) 2 (~U v D) ⇒ (W • ~R) / W • ~U 3. 1 (M ⇒ P) ⇒ ~P 2 H ⇒ P 3 M ⇒ H / ~H 4. 1 ~Z 2 S 3 Zv(S ⇒ H) / H

    asked by Rick
  197. math help

    5x+10y +15z-15x+10y-5z+5x-10y-5z / (5x+10y+15z)-(15x+10y-5z)+(5x-10y-5z) a. 1/3 b. 1 c. x+2y+z / x-2y+3z d. x-2y-z / x+2y-3z e. x-2y-z / x+2y+z my answer is none of above, is - 1/3, I didn't know I done it wrong or the question is not correct

    asked by Tomas
  198. music

    what is a piece of music that i can research it in depth?

    asked by sindey
  199. Chem simple question

    how many mL of .135M Sr(OH)2 are needed to neutralize 35ml of .157M HCL I know the answer came out to 20.4 ml My only question is how do I convert HCL to Sr(OH)2

    asked by Julie
  200. HELP PLZ

    what is a project proposal?

    asked by Mary Ann
  201. Mathmatics

    A function of two variables is given by, f(x,y) = e^2x-3y Find the tangent approximation to f(0.989,1.166) near (0,0), giving your answer to 4 decimal places. Any kind soul to help on the problem. My professor raise this problem to me. i am so stuck.

    asked by Margaret
  202. Mergers & Acquisitions

    List the three ways that tender offer legislation protects target company shareholders?

    asked by misvirg
  203. Math Probabilities

    P(A or B) = P(A) + P(B) − P(A and B) when 1. A and B are mutually exclusive 2. A and B are complements 3. A and B occur together 4. A and B are dependent I am pretty confused on this one help will be great :)

    asked by Alex
  204. Statistics

    1. In a certain game, the probability of getting a red outcome is 0.03. Find the probability of getting an outcome that is not red? The answer must be in a decimal. I put 0.97 as the answer ( 1-0.03=0.97) 2. The instructor in a Humanities class says that

    asked by Lisa
  205. math

    1,0,1,1,01,1,1,0,1,1,1,101, meaning the next numbers are 1,01, right?

    asked by sam
  206. Algebra HELP!!

    Find the measure of each angle. Angle A is half as large as its complement angle B

    asked by J
  207. Algebra 1

    Solve the equation. 4x + 2 = 5(x + 10)

    asked by Anonymous
  208. Engineering

    What is the critical buckling force that will buckle a 9 foot tall 2 x 4 (K = 1.0)? Please show how to set up the problem and the steps to solve. I do not understand. Thank you.

    asked by Nabil
  209. Math

    So im told to find the value of each variable. It's a X. One side equals 3xº and the other side says (80-x)º 3x=80-x 4x=80 x=20 As you can see the value I got was 20. But in another question it tells me to find the measure of the labeled angles. How do I

    asked by J
  210. chemistry

    how many millimeters of a 5.15 M CH3OH stock solution are needed to prepare 375 mL of a solution having 7.50 mg of methanol per mL of solution

    asked by Anonymous
  211. Algebra 1

    Solve the equation. 3(t + 7) + 2 = 6t - 2 + 2t

    asked by Anonymous
  212. Pre Algebra

    208/1000=x/125 How do you solve it or can you

    asked by Daniel
  213. math

    factor completely n^4-y^4 (n^2+Y^2)(n^2-y^2) (n^2+y^2)(n+y)(n-y) Did I do this correctly? Thank you

    asked by B8
  214. Math/physics

    An 6 x 8 wood column is 17 feet tall and is loaded with 40 Kips. Will it buckle (K = 1.0)? How do I set this up and solve? Please show steps. I am confused and do not know how to start. Thank you.

    asked by sejul
  215. Math

    What is the inequality sign for the word about? For example, Sally had about 10 apples.

    asked by Ally